1.. -*- coding: utf-8; mode: rst -*-
2
3.. _VIDEO_FAST_FORWARD:
4
5==================
6VIDEO_FAST_FORWARD
7==================
8
9Name
10----
11
12VIDEO_FAST_FORWARD
13
14.. attention:: This ioctl is deprecated.
15
16Synopsis
17--------
18
19.. c:function:: int ioctl(fd, VIDEO_FAST_FORWARD, int nFrames)
20    :name: VIDEO_FAST_FORWARD
21
22
23Arguments
24---------
25
26.. flat-table::
27    :header-rows:  0
28    :stub-columns: 0
29
30
31    -  .. row 1
32
33       -  int fd
34
35       -  File descriptor returned by a previous call to open().
36
37    -  .. row 2
38
39       -  int request
40
41       -  Equals VIDEO_FAST_FORWARD for this command.
42
43    -  .. row 3
44
45       -  int nFrames
46
47       -  The number of frames to skip.
48
49
50Description
51-----------
52
53This ioctl call asks the Video Device to skip decoding of N number of
54I-frames. This call can only be used if VIDEO_SOURCE_MEMORY is
55selected.
56
57
58Return Value
59------------
60
61On success 0 is returned, on error -1 and the ``errno`` variable is set
62appropriately. The generic error codes are described at the
63:ref:`Generic Error Codes <gen-errors>` chapter.
64
65
66
67.. flat-table::
68    :header-rows:  0
69    :stub-columns: 0
70
71
72    -  .. row 1
73
74       -  ``EPERM``
75
76       -  Mode VIDEO_SOURCE_MEMORY not selected.
77